Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/70 of 28/30?"
4070 × 2830 is 815.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70×28/30 40/70×56/30 40/70×28/60 40/70×84/30 40/70×28/90
© everydaycalculation.com